he's believed to have taken part in the killing of deshawn brown last march. another suspect is in custody and charged with murder. detectives are looking to the public for information about his whereabouts. they say he knew the victim and the two may have had a long-standing feud. >>> san francisco city leaders are hoping to avoid a super headache on super bowl sunday. they're taking steps to avoid a repeat of fan violence that marred the world series victory. the mayor is asking bars to keep an eye on how much alcohol they are serving especially hard liquor, more decembiesel l l bu running because they can be rerouted through large crowds. large crowds unlike electric buses. they will pick up trash to help prevent fires. there will be no tolerance for vandals. >> so the department will vigoro vigorously investigate if those things happen and we will make an arrest and they will be prosecuted to the fullest extent of the law. again, we want people to come to san francisco, and weigh want them to celebrate responsibly. >> police arrested dozens of people when